Find the sum of this infinite geometric series...
−5+4−16/5+64/25−256/125...
Enter the answer as a simplified fraction
-5 + 4 - 16/5 + 64/25 - 256/125
The common ratio , r, is [ 4/ -5] = -4/5
So tthe sum is
First term -5 -5 -5
_______ = _______ = _______ = _____ = -5 (5/9) = -25 / 9
1 - r 1 - (-4/5) 1 + 4/5 9/5